Debris Disks Around Stars Could Point the Way to Giant Exoplanets

A new study by an international team of scientists has found a connection between debris disks and giant planets, which could aid in the hunt for exoplanets.

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Dramatic Outburst at Rosetta’s Comet Just Days Before Perihelion

A comet on a comet? That’s what it looks like, but you’re witnessing the most dramatic outburst ever recorded at 67P/Churyumov-Gerasimenko by the Rosetta spacecraft. The brilliant plume of gas and dust erupted on July 29 just two weeks before perihelion. In a remarkable display of how quickly conditions on a comet can change, the outburst lasted only about 18 minutes, […]

What Makes Mars Sunsets Different from Earth’s?

Even robots can’t tear their eyes from a beautiful sunset. NASA’s Mars Curiosity rover pointed its high resolution mast camera at the setting Sun to capture this 4-image sequence on April 15 at the conclusion of the mission’s 956th Martian day. While it resembles an earthly sunset, closer inspection reveals alien oddities.(…)Read the rest of What […]

As It Turns Out, We Really Are All Starstuff

“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars,” Carl Sagan famously said in his 1980 series Cosmos. “We are made of starstuff.” And even today, observations with NASA’s airborne SOFIA observatory are supporting this statement. Measurements […]

Surprise – Mars Has Auroras Too!

Just a day after skywatchers at mid- to upper-latitudes around the world were treated to a particularly energetic display of auroras on the night of March 17 as a result of an intense geomagnetic storm, researchers announced findings from NASA’s MAVEN mission of auroral action observed on Mars – although in energetic ultraviolet wavelengths rather than visible light. […]

Rosetta’s Comet Meets Charlie Brown’s “Pig-Pen”

Anyone who’s ever read a Charlie Brown comic strip knows “Pig-Pen”, the lovable boy who walks around in a constant cloud of his own dirt and dust. Every time he sighs, dust rises in a little cloud around him. Why bother to bathe? There’s dignity in debris, which “Pig-Pen refers to as the “dust of countless ages”.  Comets shuffle around […]